Date of Birth: 
About Ren Longyun
- Ren Longyun (Chinese: ???; born 12 October 1987 in Minhe, Qinghai) is a Chinese long-distance runner who specializes in the marathon. He finished ninth (in the 10,000 metres) at the 2006 World Junior Championships and competed at the 2007 World Championships.
- He also finished second in the 2007 Beijing Marathon.
- Additionally, he represented his country at the 2008 Summer Olympics.
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